header {
    /* 适用于有宽度的块级，效果：水平居中 */
    margin: 0 auto;
    width: 1000px;
}

.header-line {
    height: 24px;
    background-color: #00b7ee;
}

.hearder-content {
    padding: 38px 76px 14px 72px;
    height: 116px;
    box-sizing: border-box;
}

.navigation {
    margin-left: 70px;
    padding-top: 38px;
}

.navigation>ul>li {
    position: relative;
    padding: 0 7px;
}

.navigation a {
    color: rgb(3, 3, 3);
    font-size: 14px;
}

.navigation .active::after {
    content: '';
    position: absolute;
    bottom: 0;
    display: block;
    width: 60%;
    height: 1px;
    background-color: #828282;
}